Wyon battery

Our products offer a variety of advantages that distinguish them from the standard rechargeable cells and batteries that are available on the market.

  • Wyon has extensive experience in miniaturization and achieving the highest possible energy capacity in the smallest possible size.
  • Customers can choose the shape of their cell or battery from two dimensions. No matter what they choose, they can be sure that the available volume has been maximized for the most powerful energy capacity possible – even for compact designs with a size of 2x2 mm.
  • At a charge rate of 0.5C, the number of cycles is at least 2,000 depending on the technology.
  • Customers can also choose from our selection of housing material – such as plastic, aluminum or titanium – to optimize the battery’s functionality in its specific application.

Plastic housing

Wyon has been producing cells in plastic housings for more than two decades.

Our plastic housing innovations meet the extremely high standards that MedTech products require such as durability and reliability. The advantages of our plastic housings include:

Greater possibilities for device shape thanks to absolute design freedom in two dimensions

No risk of corrosion, which increases the safety of the product

Light weight provides increased comfort

Reduced eddy current loss, which results in reduced heat generation and extended product lifespan

Robust housing for increased performance and lifespan compared to pouch cells

Makes it possible to build attachments onto the housing, for example, brackets. This reduces the size of the device by eliminating the need for additional brackets


Our interdisciplinary team has extensive experience in developing and manufacturing high-performance cells and batteries that are customized according to our customers’ specifications.

Wyon’s motivated experts use their knowledge to not only execute the customers’ wishes, but also offer guidance on how the final product can maximize its potential. We divide development projects into four phases:





  • Principle of cell / battery
  • Rough capacity calculation
  • Concept ideas
  • Basic risk analysis
  • Customer requirement specification
  • Project plan & cost for “concept study”
  • Quote for “concept study”
  • Product concept
  • Detailed 3D model
  • Process concept
  • Equipment concept
  • D-FMEA
  • Design freeze
  • Product pre-verification plan
  • Project plan & cost for “prototype study”
  • Quote for “prototype study”
  • Tooling & part sourcing
  • Equipment build
  • Process qualification
  • P-FMEA
  • Functional samples build
  • Product pre-verification
  • Validation plan
  • Product verification plan
  • Project plan & cost for “serialization”
  • Quote for product price
  • Serialization
  • Process validation report
  • PQ series
  • Product verification report (incl. regulatory test report)

Methodology, transparency, proper documentation and short timelines are important considerations during product development projects. Thanks to our flexible production facilities, cells and batteries can be manufactured economically in both large and small series. Complete traceability and product labeling (UDI) are standard practices at Wyon.


Wyon’s competencies extends to implantable batteries. Our experts have extensive knowledge and experience that they draw on to develop and produce microbatteries that meet the strict requirements for active implants. This also applies to the use of titanium as housing material and glass-to-titanium feedthroughs.

Production &

Our products are manufactured using state-of-the-art equipment, most of which has been developed in-house. This means we can ensure consistency in price and quality. The degree of automation is selected based on the series size.

We guarantee complete traceability of our products. Each cell and battery has an individual serial number, which makes it possible to track performance and trace components, operator and more.

The specific level of quality control is defined by our customers’ needs. However, we always conduct several quality checks throughout the production process. Every battery undergoes a leak test and multiple electrical tests. This practice of checking 100% of our batteries during production ensures that our products are safe to use and meet our customers’ specifications.

Wyon’s ISO 9001 and ISO 13485 quality management certification confirms our strong customer focus, motivation and implication of top management, innovative process approach and commitment to continuous improvement.

Industries & uses

For more than 20 years, we have worked with medical-industry clients from all around the world. Today, Wyon is the world leader in manufacturing rechargeable cells and batteries for cochlear implants. Our cells and batteries can be used in a wide range of applications wherever quality, reliability, durability and performance are required.